When a worker is shutdown, it was possible to cause script to run late in the lifecycle, at a point after where it should not be possible. This vulnerability affects Firefox < 96, Thunderbird < 91.6, and Firefox ESR < 91.6.Referenceshttps://www.mozilla.org/security/advisories/mfsa2022-05/https://www.mozilla.org/security/advisories/mfsa2022-06/https://www.mozilla.org/security/advisories/mfsa2022-01/https://bugzilla.mozilla.org/show_bug.cgi?id=1740534
